U.S. patent application number 16/752304 was filed with the patent office on 2020-07-23 for activation system information transmission method, apparatus, and device.
The applicant listed for this patent is Huawei Technologies Co., Ltd.. Invention is credited to Lei LIU, Nathan Edward TENNY, Yinghui YU.
Application Number | 20200236625 16/752304 |
Document ID | 20200236625 / US20200236625 |
Family ID | 59310862 |
Filed Date | 2020-07-23 |
Patent Application | download [pdf] |
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United States Patent
Application |
20200236625 |
Kind Code |
A1 |
YU; Yinghui ; et
al. |
July 23, 2020 |
ACTIVATION SYSTEM INFORMATION TRANSMISSION METHOD, APPARATUS, AND
DEVICE
Abstract
The present invention provides an activation system information
transmission method, apparatus, and device. The method includes:
receiving, by UE, a first system message sent by a base station,
where the first system message includes activation indication
information and a change indication tag, the activation indication
information is used to indicate whether a function indicated in an
activation system message is activated, and the change indication
tag is used to indicate whether scheduling information of the
activation system message changes; obtaining, by the UE, first
scheduling information of the activation system message according
to the activation indication information and the change indication
tag; and reading the activation system message according to the
first scheduling information, and selecting, according to the
activation indication information and the change indication tag,
different manners to obtain the first scheduling information of the
activation system message.
Inventors: |
YU; Yinghui; (Beijing,
CN) ; LIU; Lei; (Shanghai, CN) ; TENNY; Nathan
Edward; (San Diego, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Huawei Technologies Co., Ltd. |
Shenzhen |
|
CN |
|
|
Family ID: |
59310862 |
Appl. No.: |
16/752304 |
Filed: |
January 24, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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16035293 |
Jul 13, 2018 |
10595272 |
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16752304 |
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PCT/CN2016/085476 |
Jun 12, 2016 |
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16035293 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W 72/1289 20130101;
Y02D 70/00 20180101; H04W 48/08 20130101; H04W 52/0229 20130101;
H04W 68/00 20130101; Y02D 30/70 20200801; H04W 76/28 20180201; H04L
5/0053 20130101 |
International
Class: |
H04W 52/02 20060101
H04W052/02; H04W 68/00 20060101 H04W068/00; H04W 76/28 20060101
H04W076/28; H04L 5/00 20060101 H04L005/00; H04W 48/08 20060101
H04W048/08; H04W 72/12 20060101 H04W072/12 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 14, 2016 |
CN |
PCT/CN2016/070913 |
Claims
1. An activation system information transmission method,
comprising: receiving, by user equipment (UE), a first system
message from a base station, wherein the first system message
comprises activation indication information and a change indication
tag, the activation indication information indicates whether a
function indicated in an activation system message is activated,
and the change indication tag indicates whether scheduling
information of the activation system message changes; obtaining, by
the UE, first scheduling information of the activation system
message according to the activation indication information and the
change indication tag; and reading, by the UE, the activation
system message according to the first scheduling information.
2. The method according to claim 1, wherein the reading, by the UE,
the activation system message according to the first scheduling
information comprises: obtaining, by the UE, an updated system
message at any time according to the first scheduling
information.
3. The method according to claim 1, wherein the change indication
tag further indicates a change of a second system message, wherein
the second system message comprises the scheduling information of
the activation system message.
4. The method according to claim 1, wherein the change indication
tag in the first system message does not indicate a change of the
activation system message.
5. The method according to claim 1, wherein the obtaining, by the
UE, first scheduling information of the activation system message
according to the activation indication information and the change
indication tag comprises: detecting, by the UE, whether the
scheduling information of the activation system message is locally
stored; and if the scheduling information of the activation system
message is locally stored, determining, by the UE according to the
activation indication information, whether the function indicated
in the activation system message is activated; if the function
indicated in the activation system message is activated,
determining, by the UE according to the change indication tag,
whether the scheduling information of the activation system message
changes; and if the scheduling information of the activation system
message does not change, using the locally stored scheduling
information of the activation system message as the first
scheduling information.
6. The method according to claim 5, wherein the method further
comprises: if the scheduling information of the activation system
message is not locally stored, receiving, by the UE, a second
system message sent by the base station, wherein the second system
message comprises the first scheduling information of the
activation system message and scheduling information of a
non-activation system message.
7. The method according to claim 5, wherein the method further
comprises: if the scheduling information of the activation system
message is not locally stored, and the function indicated in the
activation system message is activated, receiving, by the UE, a
second system message sent by the base station, wherein the second
system message comprises the first scheduling information of the
activation system message and scheduling information of a
conventional system message.
8. The method according to claim 5, wherein the method further
comprises: if the scheduling information of the activation system
message changes, receiving, by the UE, a second system message sent
by the base station, wherein the second system message comprises
the first scheduling information of the activation system message
and scheduling information of a conventional system message.
9. The method according to claim 6, wherein the method further
comprises: updating, by the UE, the locally stored scheduling
information of the activation system message to the first
scheduling information.
10. The method according to claim 1, wherein if the change
indication tag is a value tag, the determining, by the UE according
to the change indication tag, whether the scheduling information of
the activation system message changes comprises: if the UE detects
that the value tag changes, determining that the scheduling
information of the activation system message changes; or, if the UE
detects that the value tag does not change, determining that the
scheduling information of the activation system information does
not change.
11. The method according to claim 1, wherein the activation system
message comprises an access control message.
12. The method according to claim 11, further including:
determining, by the UE, according to the access control message,
whether to access a network.
13. User equipment, comprising a memory that stores a program
instruction, a processor configured to control execution of the
program instruction, and a receiver, wherein: the receiver is
configured to receive a first system message sent by a base
station, wherein the first system message comprises activation
indication information and a change indication tag, the activation
indication information indicates whether a function indicated in an
activation system message is activated, and the change indication
tag indicates whether scheduling information of the activation
system message changes; the processor is configured to obtain first
scheduling information of the activation system message according
to the activation indication information and the change indication
tag; and the receiver is further configured to read the activation
system message according to the first scheduling information.
14. The apparatus according to claim 13, wherein the processor is
configured to obtain an updated system message at any time
according to the first scheduling information.
15. The apparatus according to claim 13, wherein the change
indication tag further indicates a change of a second system
message, wherein the second system message comprises the scheduling
information of the activation system message.
16. The apparatus according to claim 13, wherein the change
indication tag in the first system message does not indicate a
change of the activation system message.
17. The apparatus according to claim 13, wherein: the processor is
configured to detect whether the scheduling information of the
activation system message is locally stored; and configured to: if
the scheduling information of the activation system message is
locally stored, determine, according to the activation indication
information, whether the function indicated in the activation
system message is activated; the processor is further configured
to: if the function indicated in the activation system message is
activated, determine, according to the change indication tag,
whether the scheduling information of the activation system message
changes; and the processor is further configured to: if the
scheduling information of the activation system message does not
change, use the locally stored scheduling information of the
activation system message as the first scheduling information.
18. The apparatus according to claim 17, wherein if the scheduling
information of the activation system message is not locally stored,
the receiver is further configured to receive a second system
message sent by the base station, wherein the second system message
comprises the first scheduling information of the activation system
message and scheduling information of a conventional system
message.
19. The apparatus according to claim 13, wherein the activation
system message read by the receiver comprises an access control
message.
20. A computer program product stored in a non-transitory medium,
comprising instructions which, when executed by a computer, cause
the computer to: receive a first system message sent by a base
station, wherein the first system message comprises activation
indication information and a change indication tag, the activation
indication information indicates whether a function indicated in an
activation system message is activated, and the change indication
tag indicates whether scheduling information of the activation
system message changes; obtain first scheduling information of the
activation system message according to the activation indication
information and the change indication tag; and read the activation
system message according to the first scheduling information.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 16/035,293, filed on Jul. 13, 2018, which is a
continuation of International Application No. PCT/CN2016/085476,
filed on Jun. 12, 2016. The International Application claims
priority to International Application No. PCT/CN2016/070913, filed
on Jan. 14, 2016. All of the afore-mentioned patent applications
are hereby incorporated by reference in their entireties.
TECHNICAL FIELD
[0002] Embodiments of the present invention relate to
communications technologies, and in particular, to an activation
system information transmission method, apparatus, and device.
BACKGROUND
[0003] Mobile communication has profoundly changed people's life,
but people never stop pursuing higher-performance mobile
communication. A 5.sup.th Generation (5G) mobile communications
system emerges, so as to deal with an explosive growth of mobile
data traffic, massive device connections, and various new emerging
services and application scenarios in the future. As an important
part of 5G, Internet of Things witnesses a rapid growth in market
demand. Currently, the 3.sup.rd Generation Partnership Project
(3GPP) is studying how to carry an Internet of Things (IoT) service
based on a cellular network by designing a new air interface and
making full use of a feature of a narrowband technology. This type
of IoT is referred to as NB-IoT. Compared with a conventional
cellular network, in an NB-IoT network, a service and a terminal
device have the following requirements and features: a low service
rate, a long period, massive connections, a low cost, low power
consumption, and the like.
[0004] For the NB-IoT network, a system solution is re-designed in
response to the foregoing requirements and features of the NB-IoT
network, the service, and the terminal. A new access control
mechanism is introduced in NB-IoT due to a low cost requirement. An
access control parameter is placed in an independent system
information block (SIB). FIG. 1 is a schematic diagram of NB-IoT
access control. As shown in FIG. 1, a system message includes a
master system message (Master information Block, MIB) that includes
a most important system parameter of a system, a SIB 1 that carries
cell access control information and scheduling information of
another system information block, a SIB 2 for radio resource
configuration, a newly added SIB_AC for access control, and other
SIBs. When a network is lightly loaded and access control is not
performed, an access control (AC) resource is not scheduled and the
SIB_AC is not sent, either. When a network is overloaded and access
control needs to be performed, an AC resource is scheduled and the
SIB_AC needs to be sent. In this way, when an AC function is
enabled or disabled, because scheduling information that is in the
SIB 1 and that is corresponding to the AC function also changes,
user equipment (UE) always needs to read the SIB 1 to obtain
updated scheduling information when the access control function is
enabled or disabled.
[0005] However, because NB-IoT supports a coverage enhancement
feature and narrowband system bandwidth, and transmission time of a
SIB 1 message is relatively long, the UE continuously performs
detection and reception, and power consumption of the UE
increases.
SUMMARY
[0006] Embodiments of the present invention provide an activation
system information transmission method, apparatus, and device, so
as to resolve a problem that because NB-IoT supports a coverage
enhancement feature and narrowband system bandwidth, and
transmission time of a SIB 1 message is relatively long, UE
continuously performs detection and reception, and power
consumption of the UE increases.
[0007] A first aspect of the present invention provides an
activation system information transmission method, including:
[0008] receiving, by UE, a first system message sent by a base
station, where the first system message includes activation
indication information and a change indication tag, the activation
indication information is used to indicate whether a function
indicated in an activation system message is activated, and the
change indication tag is used to indicate whether scheduling
information of the activation system message changes;
[0009] obtaining, by the UE, first scheduling information of the
activation system message according to the activation indication
information and the change indication tag; and
[0010] reading, by the UE, the activation system message according
to the first scheduling information.
[0011] In this solution, the UE determines, according to the
activation indication information and the change indication tag in
the first system message, whether to obtain the first scheduling
information from the UE or obtain the first scheduling information
from a system message broadcast by the base station, and after
obtaining the first scheduling information, reads the activation
system message at a location corresponding to the first scheduling
information, and completes access to a service according to an
indication in the activation system message.
[0012] With reference to the first aspect, in a first possible
implementation of the first aspect, the obtaining, by the UE, first
scheduling information of the activation system message according
to the activation indication information and the change indication
tag includes:
[0013] detecting, by the UE, whether the scheduling information of
the activation system message is locally stored;
[0014] if the scheduling information of the activation system
message is locally stored, determining, by the UE according to the
activation indication information, whether the function indicated
in the activation system message is activated;
[0015] if the function indicated in the activation system message
is activated, determining, by the UE according to the change
indication tag, whether the scheduling information of the
activation system message changes; and
[0016] if the scheduling information of the activation system
message does not change, using the locally stored scheduling
information of the activation system message as the first
scheduling information.
[0017] In this solution, the UE first determines whether the
scheduling information of the activation system message is locally
stored; if the scheduling information is locally stored, when the
activation indication information indicates that the function in
the activation system message is activated, the UE determines,
according to the change indication tag, whether the scheduling
information of the activation system message changes; and if the
scheduling information of the activation system message does not
change, the UE uses the locally stored scheduling information as
the first scheduling information, and receives the activation
system message on a resource indicated in the first scheduling
information.
[0018] In this solution, if the scheduling information of the
activation system message is not locally stored, the UE receives a
second system message sent by the base station, where the second
system message includes the first scheduling information of the
activation system message and scheduling information of a
conventional system message.
[0019] Optionally, if the scheduling information of the activation
system message is not locally stored, and the function indicated in
the activation system message is activated, the UE receives a
second system message sent by the base station, where the second
system message includes the first scheduling information of the
activation system message and scheduling information of a
conventional system message.
[0020] Optionally, if the scheduling information of the activation
system message changes, the UE receives a second system message
sent by the base station, where the second system message includes
the first scheduling information of the activation system message
and scheduling information of a conventional system message.
[0021] The foregoing solutions mean: After receiving the first
system message, if the scheduling information of the activation
system message is not locally stored, or the scheduling information
of the activation system message is not locally stored and the
function indicated in the activation system message is activated,
or the scheduling information of the activation system message
changes, or the scheduling information of the activation system
message changes and the function indicated in the activation system
message is activated, or the like, the UE further needs to obtain
the scheduling information of the activation system message by
receiving the second system message broadcast by the base
station.
[0022] With reference to any one of the foregoing solutions, the
method further includes:
[0023] updating, by the UE, the locally stored scheduling
information of the activation system message to the first
scheduling information. The solution means: After obtaining the
first scheduling information of the activation system message, the
UE needs to store the first scheduling information, and if the
scheduling information is locally stored, the UE updates the
scheduling information, that is, deletes the original scheduling
information and updates the original scheduling information to the
first scheduling information; or if the scheduling information is
not locally stored, the UE directly stores the first scheduling
information.
[0024] In a specific implementation, if the change indication tag
is a value tag, the determining, by the UE according to the change
indication tag, whether the scheduling information of the
activation system message changes includes:
[0025] if the UE detects that the value tag changes, determining
that the scheduling information of the activation system message
changes; or if the UE detects that the value tag does not change,
determining that the scheduling information of the activation
system information does not change.
[0026] With reference to any one of the foregoing solutions, the
activation system message includes an access control message. The
access control (AC) message is used as an example. With reference
to the background, the essence of this solution is to introduce a
bit in a MIB to indicate whether an access control mechanism is
enabled. The MIB includes a change indication tag that is used to
indicate whether the scheduling information changes. In any case,
the base station adds scheduling information of an SIB_AC to
scheduling information of a SIB 1. When it is determined that the
access control function is deactivated, the base station does not
send the SIB_AC; or when it is determined that the access control
function is activated, the base station sends the SIB_AC. The UE
may determine, according to the change indication tag and the
activation indication information in the MIB, whether to read the
scheduling information of the SIB_AC sent by the base station.
[0027] A second aspect of the present invention provides an
activation system information transmission method, including:
[0028] generating, by a base station, a first system message, where
the first system message includes activation indication information
and a change indication tag, the activation indication information
is used to indicate whether a function indicated in an activation
system message is activated, and the change indication tag is used
to indicate whether scheduling information of the activation system
message changes; and
[0029] broadcasting, by the base station, the first system message,
so that UE obtains first scheduling information of the activation
system message according to the activation indication information
and the change indication tag, and reads the activation system
message according to the first scheduling information.
[0030] The base station broadcasts the first system message. The UE
determines, according to the activation indication information and
the change indication tag in the first system message, whether to
read the scheduling information that is of the activation system
message and that is sent by the base station or obtain the
scheduling information of the activation system message from the
UE, and then receives the activation system message at a resource
location indicated in the scheduling information.
[0031] Further, the method further includes:
[0032] generating, by the base station, a second system message,
where the second system message includes the scheduling information
of the activation system message and scheduling information of a
conventional system message; and
[0033] broadcasting, by the base station, the second system message
and the activation system message if the activation indication
information indicates that the function indicated in the activation
system message is activated; or
[0034] broadcasting, by the base station, the second system message
if the activation indication information indicates that the
function indicated in the activation system message is not
activated.
[0035] In this solution, the base station generates the second
system message that includes the scheduling information of the
conventional system message and the scheduling information of the
activation system message, but needs to determine whether the
function indicated in the activation system message is activated.
If the function indicated in the activation system message is
activated, the base station needs to simultaneously broadcast the
second system message and the activation system message; or if the
function indicated in the activation system message is not
activated, the base station only needs to broadcast the second
system message.
[0036] In any one of the foregoing solutions, the change indication
tag is a value tag.
[0037] Specifically, the generating, by a base station, a first
system message includes:
[0038] changing, by the base station, the value tag when it is
determined that the sent scheduling information of the activation
system message changes; or
[0039] changing, by the base station, the value tag when
determining that the base station changes from a state in which the
base station does not send the scheduling information of the
activation system message to a state in which the base station
sends the scheduling information of the activation system
information, or the base station changes from a state in which the
base station sends the scheduling information of the activation
system message to a state in which the base station does not send
the scheduling information of the activation system information;
or
[0040] skipping, by the base station, changing the value tag when
determining that the base station changes from a state in which the
base station does not send the scheduling information of the
activation system message to a state in which the base station
sends the scheduling information of the activation system
information, or the base station changes from a state in which the
base station sends the scheduling information of the activation
system message to a state in which the base station does not send
the scheduling information of the activation system
information.
[0041] This solution means: In a process of generating the first
system message, the base station needs to determine the value tag.
The value tag is specifically determined in the following manners.
In a first manner, if the base station determines that scheduling
information that is of the activation system message and that is
sent last time is different from current scheduling information,
that is, the scheduling information of the activation system
message changes, the base station needs to change the value tag,
that is, change the value tag to a value different from a last
value for determining by the UE. In a second manner, if the base
station determines that the scheduling information of the
activation system message is not sent last time, but the scheduling
information of the activation system message is sent this time, or
the scheduling information of the activation system message is sent
last time, but the scheduling information of the activation system
message is not sent this time, the base station may change the
value tag, or may not change the value tag, based on implementation
of the base station.
[0042] In a specific implementation, the activation system message
includes an access control message. For a specific implementation,
refer to the description of a UE side.
[0043] A third aspect of the present invention provides an
activation system information transmission apparatus,
including:
[0044] a first receiving module, configured to receive a first
system message sent by a base station, where the first system
message includes activation indication information and a change
indication tag, the activation indication information is used to
indicate whether a function indicated in an activation system
message is activated, and the change indication tag is used to
indicate whether scheduling information of the activation system
message changes;
[0045] a processing module, configured to obtain first scheduling
information of the activation system message according to the
activation indication information and the change indication tag;
and
[0046] a second receiving module, configured to read the activation
system message according to the first scheduling information.
[0047] Further, the processing module includes:
[0048] a detection submodule, configured to detect whether the
scheduling information of the activation system message is locally
stored;
[0049] a first determining submodule, configured to: if the
detection submodule detects that the scheduling information of the
activation system message is locally stored, determine, according
to the activation indication information, whether the function
indicated in the activation system message is activated;
[0050] a second determining submodule, configured to: if the first
determining submodule determines that the function indicated in the
activation system message is activated, determine, according to the
change indication tag, whether the scheduling information of the
activation system message changes; and
[0051] a processing submodule, configured to: if the second
determining submodule determines that the scheduling information of
the activation system message does not change, use the locally
stored scheduling information of the activation system message as
the first scheduling information.
[0052] Optionally, if the detection submodule detects that the
scheduling information of the activation system message is not
locally stored, the second receiving module is further configured
to receive a second system message sent by the base station, where
the second system message includes the first scheduling information
of the activation system message and scheduling information of a
conventional system message.
[0053] Optionally, if the detection submodule detects that the
scheduling information of the activation system message is not
locally stored, and the first determining submodule determines that
the function indicated in the activation system message is
activated, the second receiving module is further configured to
receive a second system message sent by the base station, where the
second system message includes the first scheduling information of
the activation system message and scheduling information of a
conventional system message.
[0054] Optionally, if the second determining submodule determines
that the scheduling information of the activation system message
changes, the second receiving module is further configured to
receive a second system message sent by the base station, where the
second system message includes the first scheduling information of
the activation system message and scheduling information of a
conventional system message.
[0055] Further, the apparatus further includes:
[0056] a storage module, configured to update the locally stored
scheduling information of the activation system message to the
first scheduling information.
[0057] Optionally, if the change indication tag is a value tag, the
second determining submodule is specifically configured to: if the
UE detects that the value tag changes, determine that the
scheduling information of the activation system message changes; or
if the UE detects that the value tag does not change, determine
that the scheduling information of the activation system
information does not change.
[0058] Optionally, the activation system message read by the second
receiving module includes an access control message.
[0059] A fourth aspect of the present invention provides an
activation system information transmission apparatus,
including:
[0060] a first processing module, configured to generate a first
system message, where the first system message includes activation
indication information and a change indication tag, the activation
indication information is used to indicate whether a function
indicated in an activation system message is activated, and the
change indication tag is used to indicate whether scheduling
information of the activation system message changes; and
[0061] a first sending module, configured to broadcast the first
system message, so that user equipment UE obtains first scheduling
information of the activation system message according to the
activation indication information and the change indication tag,
and reads the activation system message according to the first
scheduling information.
[0062] Further, the apparatus further includes:
[0063] a second processing module, configured to generate a second
system message, where the second system message includes the
scheduling information corresponding to the activation system
message and scheduling information of a conventional system
message; and
[0064] a second sending module, configured to broadcast the second
system message and the activation system message if the activation
indication information indicates that the function indicated in the
activation system message is activated, where
[0065] the second sending module is further configured to broadcast
the second system message if the activation indication information
indicates that the function indicated in the activation system
message is not activated.
[0066] Optionally, if the change indication tag is a value tag, the
first processing module is specifically configured to:
[0067] change the value tag when it is determined that the sent
scheduling information of the activation system message changes;
or
[0068] change the value tag when it is determined that the access
control apparatus changes from a state in which the access control
apparatus does not send the scheduling information of the
activation system message to a state in which the access control
apparatus sends the scheduling information of the activation system
information, or the access control apparatus changes from a state
in which the access control apparatus sends the scheduling
information of the activation system message to a state in which
the access control apparatus does not send the scheduling
information of the activation system information; or
[0069] skip changing the value tag when it is determined that the
access control apparatus changes from a state in which the access
control apparatus does not send the scheduling information of the
activation system message to a state in which the access control
apparatus sends the scheduling information of the activation system
information, or the access control apparatus changes from a state
in which the access control apparatus sends the scheduling
information of the activation system message to a state in which
the access control apparatus does not send the scheduling
information of the activation system information.
[0070] A fifth aspect of the present invention provides user
equipment, including a memory that stores a program instruction, a
processor configured to control execution of the program
instruction, and a receiver, where
[0071] the receiver is configured to receive a first system message
sent by a base station, where the first system message includes
activation indication information and a change indication tag, the
activation indication information is used to indicate whether a
function indicated in an activation system message is activated,
and the change indication tag is used to indicate whether
scheduling information of the activation system message
changes;
[0072] the processor is configured to obtain first scheduling
information of the activation system message according to the
activation indication information and the change indication tag;
and
[0073] the receiver is further configured to read the activation
system message according to the first scheduling information.
[0074] A sixth aspect of the present invention provides a base
station, including a memory that stores a program instruction, a
processor configured to control execution of the program
instruction, and a transmitter, where
[0075] the processor is configured to generate a first system
message, where the first system message includes activation
indication information and a change indication tag, the activation
indication information is used to indicate whether a function
indicated in an activation system message is activated, and the
change indication tag is used to indicate whether scheduling
information of the activation system message changes; and
[0076] the transmitter is configured to broadcast the first system
message, so that UE obtains first scheduling information of the
activation system message according to the activation indication
information and the change indication tag, and reads the activation
system message according to the first scheduling information.
[0077] A seventh aspect of the present invention provides an access
control system, including a base station and at least one UE. The
base station is configured to:
[0078] generate a first system message, where the first system
message includes activation indication information and a change
indication tag, the activation indication information is used to
indicate whether a function indicated in an activation system
message is activated, and the change indication tag is used to
indicate whether scheduling information of the activation system
message changes; and
[0079] broadcast the first system message, so that the UE obtains
first scheduling information of the activation system message
according to the activation indication information and the change
indication tag, and reads the activation system message according
to the first scheduling information.
[0080] Each UE is configured to:
[0081] receive the first system message sent by the base station,
where the first system message includes the activation indication
information and the change indication tag, the activation
indication information is used to indicate whether the function
indicated in the activation system message is activated, and the
change indication tag is used to indicate whether the scheduling
information of the activation system message changes; obtain the
first scheduling information of the activation system message
according to the activation indication information and the change
indication tag; and read the activation system message according to
the first scheduling information.
[0082] According to the activation system information transmission
method, apparatus, and device provided in the present invention,
the base station adds the activation indication information and the
change indication tag to the broadcast first system message; and
after receiving the first system message, the UE selects, according
to the activation indication information and the change indication
tag, different manners to obtain the first scheduling information
of the activation system message, and then reads the activation
system message at a location corresponding to the first scheduling
information, so as to ensure that the UE needs to receive the
scheduling information of the activation system message only when
the scheduling information changes, and prevent the UE from
continuously remaining in a detection and reception state, thereby
effectively reducing power consumption of the UE.
BRIEF DESCRIPTION OF DRAWINGS
[0083] To describe the technical solutions in the embodiments of
the present invention more clearly, the following briefly describes
the accompanying drawings required for describing the embodiments.
Apparently, the accompanying drawings in the following description
show some embodiments of the present invention, and persons of
ordinary skill in the art may still derive other drawings from
these accompanying drawings without creative efforts.
[0084] FIG. 1 is a schematic diagram of NB-IoT access control;
[0085] FIG. 2 is a schematic diagram of an application scenario of
an activation system information transmission method according to
the present invention;
[0086] FIG. 3 is a flowchart of Embodiment 1 of an activation
system information transmission method according to the present
invention;
[0087] FIG. 4 is a flowchart of Embodiment 2 of an activation
system information transmission method according to the present
invention;
[0088] FIG. 5 is a flowchart of Embodiment 3 of an activation
system information transmission method according to the present
invention;
[0089] FIG. 6 is a schematic diagram of NB-IoT access control
according to the present invention;
[0090] FIG. 7 is a schematic structural diagram of Embodiment 1 of
an activation system information transmission apparatus according
to the present invention;
[0091] FIG. 8 is a schematic structural diagram of Embodiment 2 of
an activation system information transmission apparatus according
to the present invention;
[0092] FIG. 9 is a schematic structural diagram of Embodiment 3 of
an activation system information transmission apparatus according
to the present invention;
[0093] FIG. 10 is a schematic structural diagram of Embodiment 4 of
an activation system information transmission apparatus according
to the present invention;
[0094] FIG. 11 is a schematic structural diagram of Embodiment 5 of
an activation system information transmission apparatus according
to the present invention;
[0095] FIG. 12 is a schematic structural diagram of Embodiment 1 of
user equipment according to the present invention;
[0096] FIG. 13 is a schematic structural diagram of Embodiment 2 of
user equipment according to the present invention; and
[0097] FIG. 14 is a schematic structural diagram of Embodiment 1 of
a base station according to the present invention.
DESCRIPTION OF EMBODIMENTS
[0098] To make the objectives, technical solutions, and advantages
of the embodiments of the present invention clearer, the following
clearly describes the technical solutions in the embodiments of the
present invention with reference to the accompanying drawings in
the embodiments of the present invention. Apparently, the described
embodiments are some but not all of the embodiments of the present
invention. All other embodiments obtained by persons of ordinary
skill in the art based on the embodiments of the present invention
without creative efforts shall fall within the protection scope of
the present invention.
[0099] FIG. 2 is a schematic diagram of an application scenario of
an activation system information transmission method according to
the present invention. A solution of the present invention may be
applied to a wireless communications system with large network
coverage and a plurality of connections, for example, an IoT
communications system, shown in FIG. 2, having a terminal of low
costs and low power consumption. The application scenario or the
wireless communications system may include a plurality of base
stations, and a coverage area of each base station may include a
plurality of user equipments, such as a refrigerator, a washing
machine, a car, a television, a computer, a water meter, and an
electricity meter. The user equipments implement communication by
using a wireless network or a cellular network. A service of the
IoT communications system generates a relatively small packet and
is less sensitive to a delay, so that massive user terminal devices
can be deployed. The user terminal devices may include smart
water/electricity meters, smart home devices, smart wearable
devices, and the like that are deployed in a large scale. A large
quantity of such devices may be connected to one base station.
However, such a network deployment requires lower power consumption
of the user equipment or the terminal device, so as to ensure an
extra-long standby time of the user equipment, thereby reducing
labor costs. However, in an existing control mechanism of service
functions corresponding to some activation system information,
power consumption of user equipment increases because updated
scheduling information in a SIB 1 needs to be continuously read in
a method for obtaining activation system information. In view of
this, a more energy-saving activation system information
transmission method is provided.
[0100] In the following technical solution, system messages are
classified into two types according to a requirement for timeliness
in which a changed system message needs to be obtained: One type is
a conventional system message. After this type of system message
changes, UE does not need to immediately obtain a changed system
message, and can wait until a boundary of a change period to obtain
the changed system message. The other type is an activation system
message that needs to be obtained in time. After this type of
system message changes, the UE can obtain an updated system message
at any time, and no specific change period is used.
[0101] FIG. 3 is a flowchart of Embodiment 1 of an activation
system information transmission method according to the present
invention. As shown in FIG. 3, the solution is executed by UE on
the basis of the application scenario shown in FIG. 2. The
activation system information transmission method includes the
following specific steps.
[0102] S101. The UE receives a first system message sent by a base
station, where the first system message includes activation
indication information and a change indication tag.
[0103] In this embodiment, the user equipment, that is, a terminal
device on a user side, receives the first system message broadcast
by the base station. The first system message is a system message
necessary for transmission. The activation indication information
is used to indicate whether a function indicated in an activation
system message is activated, and the change indication tag is used
to indicate whether scheduling information of the activation system
message changes.
[0104] S102. The UE obtains first scheduling information of an
activation system message according to the activation indication
information and the change indication tag.
[0105] In this step, the UE does not receive all messages broadcast
by the base station. In particular, for the scheduling information
of the activation system message, the UE performs determining
according to the activation indication information and the change
indication tag. If the scheduling information of the activation
system message is locally stored, and the change indication tag
indicates that the scheduling information of the activation system
message does not change, the UE directly uses the local scheduling
information as the first scheduling information; or if the
scheduling information of the activation system message is not
locally stored, the UE receives the scheduling information from the
messages broadcast by the base station.
[0106] S103. The UE reads the activation system message according
to the first scheduling information.
[0107] In this step, after obtaining the first scheduling
information, the UE needs to receive the activation system message
on a resource (or referred to as a location) indicated in the first
scheduling information.
[0108] The terminal uses a corresponding activation function
according to a function supported in the activation system
message.
[0109] Access control is used as an example. After reading a
message in which an access control message is located, the terminal
determines, according to an access control parameter included in
the message, whether to access a network.
[0110] According to the activation system information transmission
method provided in this embodiment, the base station adds the
activation indication information and the change indication tag to
the broadcast first system message; and after receiving the first
system message, the UE selects, according to the activation
indication information and the change indication tag, different
manners to obtain the first scheduling information of the
activation system message, and then reads the activation system
message at a location corresponding to the first scheduling
information, so as to ensure that the UE needs to receive the
scheduling information of the activation system message only when
the scheduling information changes, and prevent the UE from
continuously remaining in a detection and reception state, thereby
effectively reducing power consumption of the UE.
[0111] On the basis of the foregoing embodiment, the following
describes in detail a specific implementation in which the UE
obtains the first scheduling information.
[0112] FIG. 4 is a flowchart of Embodiment 2 of an activation
system information transmission method according to the present
invention. As shown in FIG. 4, on the basis of the foregoing
embodiment, a specific implementation step in which the UE obtains
the first scheduling information of the activation system message
according to the activation indication information and the change
indication tag in S102 is as follows:
[0113] S201. The UE detects whether scheduling information of the
activation system message is locally stored.
[0114] In this step, after receiving the first system message, the
UE first needs to detect whether scheduling information of one or
more corresponding activation system messages is locally stored,
that is, each time obtaining the scheduling information, the UE
needs to store the scheduling information.
[0115] Optionally, if the UE detects that the scheduling
information of the activation system message is not locally stored,
the UE receives a second system message sent by the base station,
where the second system message includes the first scheduling
information of the activation system message and scheduling
information of a conventional system message. This means: After the
UE detects that the scheduling information of the activation system
message is not locally stored, the UE needs to obtain the
scheduling information from the second system message broadcast by
the base station, that is, read the scheduling information from a
scheduling information block.
[0116] S202. If the scheduling information of the activation system
message is locally stored, the UE determines, according to the
activation indication information, whether a function indicated in
the activation system message is activated.
[0117] In this step, if the UE stores the scheduling information of
the activation system message, the UE needs to detect whether the
function indicated in the activation system information is
activated; and if the function indicated in the activation system
information is activated, the UE needs to obtain the scheduling
information.
[0118] S203. If the function indicated in the activation system
message is activated, the UE determines, according to the change
indication tag, whether the scheduling information of the
activation system message changes.
[0119] In this step, if the UE determines that the function
indicated in the activation system message is activated, and has
determined, according to the foregoing step, that the scheduling
information of the activation system message is locally stored, the
UE needs to further determine whether the scheduling information of
the activation system message changes. In a specific
implementation, the change indication tag may be a value tag, that
is, a value is used to indicate a change of the scheduling
information. A specific manner of determining whether the
scheduling information changes is: If the UE detects that the value
tag changes, the UE determines that the scheduling information of
the activation system message changes; or if the UE detects that
the value tag does not change, the UE determines that the
scheduling information of the activation system information does
not change. That is, the UE detects whether a current value tag is
the same as a value tag obtained last time; and if the current
value tag is the same as the value tag obtained last time, the UE
determines that the scheduling information of the activation system
message does not change, or if the current value tag is different
from the value tag obtained last time, the UE determines that the
scheduling information of the activation system message
changes.
[0120] The foregoing description means: If the change indication
tag does not change, the UE determines that the scheduling
information of the activation function does not change; or if the
change indication tag changes, the UE determines that the
scheduling information of the activation function changes.
[0121] Optionally, the determining that the scheduling information
of the activation system message does not change includes at least
the following two cases. In a first case, if the change indication
tag indicates that the scheduling information of the activation
system message does not change, and the second system message does
not include the scheduling information of the activation system
message, the UE determines that the scheduling information of the
activation function does not change. In a second case, if the
change indication tag indicates that the scheduling information of
the activation system message does not change, and the second
system message includes the scheduling information of the
activation system message, the UE determines that the scheduling
information of the activation function does not change.
[0122] Optionally, in the foregoing process, if the scheduling
information of the activation system message is not locally stored,
and the function indicated in the activation system message is
activated, the UE receives a second system message sent by the base
station, where the second system message includes the first
scheduling information of the activation system message and
scheduling information of a conventional system message.
[0123] That is, in the process, if the UE detects that the
scheduling information of the activation system message is not
locally stored, and the activation indication information indicates
that the function indicated in the activation system message is
activated, the UE needs to read the scheduling information of the
corresponding activation system message from the second system
message broadcast by the base station and use the scheduling
information as the first scheduling information, so as to obtain
the scheduling information of the corresponding activation system
message.
[0124] S204. If the scheduling information of the activation system
message does not change, use the locally stored scheduling
information of the activation system message as the first
scheduling information.
[0125] This step means: When the UE determines that the activation
system message is locally stored, the function indicated in the
activation system message is activated, and the scheduling
information of the activation system message does not change, the
UE does not need to read the second system message broadcast by the
base station, and directly uses the locally stored scheduling
information as the first scheduling information.
[0126] Optionally, if the scheduling information of the activation
system message changes, the UE receives a second system message
sent by the base station, where the second system message includes
the first scheduling information of the activation system message
and scheduling information of a conventional system message.
[0127] However, if the UE determines, by using the value tag, that
the scheduling information of the activation system message
changes, the UE needs to obtain the first scheduling information by
means of reading from the second system message.
[0128] Further, after obtaining the first scheduling information,
the UE updates the locally stored scheduling information of the
activation system message to the first scheduling information. That
is, if the scheduling information of the activation system message
changes, the UE deletes the locally stored scheduling information
and updates the scheduling information to new scheduling
information; or if the scheduling information of the activation
system message does not change, the UE does not need to update the
scheduling information. In addition, if the scheduling information
is not locally stored, the UE needs to store the first scheduling
information after obtaining the first scheduling information.
[0129] In the foregoing process, to monitor a change of the value
tag, the UE needs to locally store a corresponding value tag after
each time of processing is completed, so as to make a comparison in
a next time of detection.
[0130] Optionally, the activation system message includes an access
control message.
[0131] According to the activation system information transmission
method provided in this embodiment, the UE determines, according to
the activation indication information and the change indication tag
in the first system message, whether the function in the activation
system information is activated, and determines whether the
scheduling information of the activation system information
changes; and when the scheduling information of the activation
system information is locally stored, the corresponding function is
activated, and the scheduling information does not change, the UE
does not need to receive the scheduling information from the base
station, but uses the locally stored scheduling information as the
first scheduling information of the activation system information,
and reads the corresponding activation system information according
to the first scheduling information, so as to complete a subsequent
service, and reduce duration for which the terminal is in a
detection and reception state, thereby reducing power consumption
of the UE.
[0132] FIG. 5 is a flowchart of Embodiment 3 of an activation
system information transmission method according to the present
invention. As shown in FIG. 5, the solution is executed by a base
station in the scenario shown in FIG. 2. A specific implementation
step of the activation system information transmission method is as
follows:
[0133] S301. The base station generates a first system message,
where the first system message includes activation indication
information and a change indication tag.
[0134] In this embodiment, the activation indication information is
used to indicate whether a function indicated in an activation
system message is activated, and the change indication tag is used
to indicate whether scheduling information of the activation system
message changes.
[0135] S302. The base station broadcasts the first system message,
so that user equipment UE obtains first scheduling information of
an activation system message according to the activation indication
information and the change indication tag, and reads the activation
system message according to the first scheduling information.
[0136] In this embodiment, the base station adds the change
indication tag to the first system message, so that the UE
determines whether the scheduling information of the activation
system information changes. If the scheduling information of the
activation system information does not change, the function in the
activation system message is activated, and the UE stores previous
scheduling information of the activation system message, the UE may
directly use the scheduling information as the first scheduling
information to read the activation system message, and the UE does
not need to read a second system message.
[0137] For a base station side, the second system message needs to
be generated regardless of whether the function in the foregoing
activation system message is activated.
[0138] Further, the base station generates the second system
message, where the second system message includes the scheduling
information corresponding to the activation system message and
scheduling information of a conventional system message.
[0139] The base station broadcasts the second system message and
the activation system message if the activation indication
information indicates that the function indicated in the activation
system message is activated; or
[0140] the base station broadcasts the second system message if the
activation indication information indicates that the function
indicated in the activation system message is not activated.
[0141] The broadcasting the second system message means: If the
function in the activation system message is activated, the base
station needs to broadcast the second system message and the
activation system message; or if the function in the activation
system message is not activated, the base station only needs to
broadcast the second system message, and does not need to broadcast
the activation system message.
[0142] In a specific implementation, the change indication tag is a
value tag.
[0143] That the base station generates a first system message
includes:
[0144] changing, by the base station, the value tag when it is
determined that the sent scheduling information of the activation
system message changes; or
[0145] changing, by the base station, the value tag when
determining that the base station changes from a state in which the
base station does not send the scheduling information of the
activation system message to a state in which the base station
sends the scheduling information of the activation system
information, or the base station changes from a state in which the
base station sends the scheduling information of the activation
system message to a state in which the base station does not send
the scheduling information of the activation system information;
or
[0146] skipping, by the base station, changing the value tag when
determining that the base station changes from a state in which the
base station does not send the scheduling information of the
activation system message to a state in which the base station
sends the scheduling information of the activation system
information, or the base station changes from a state in which the
base station sends the scheduling information of the activation
system message to a state in which the base station does not send
the scheduling information of the activation system
information.
[0147] The solution for changing the value tag in the first system
message, that is, the solution of changing the change indication
tag means: If the base station determines that current scheduling
information of the activation system message is different from
previous scheduling information of the activation system message,
the base station changes the value tag, so that the UE can
determine that the scheduling information has changed after
receiving a changed value tag. If the base station determines that
the scheduling information of the activation system message is not
sent last time, but the scheduling information of the activation
system message is sent in this time of scheduling, or the
scheduling information of the activation system message is sent in
a last time of scheduling, but the scheduling information of the
activation system message is not sent this time, that is, when a
behavior of sending or not sending the scheduling information
changes, the base station may change the value tag, or may not
change the value tag.
[0148] That is, if the base station sends the scheduling
information of the activation system message by using the second
system message, and if the scheduling information changes, the base
station changes the change indication tag; or if whether the base
station adds the scheduling information of the activation system
message to the second system message changes, the base station
changes the change indication tag; or if whether the base station
adds the scheduling information of the activation system message to
the second system message changes, the base station does not change
the change indication tag. That whether the base station adds the
scheduling information of the activation system message to the
second system message changes specifically includes: That the
second system message of the base station previously includes the
scheduling information of the activation system message changes to
that the second system message of the base station currently does
not include the scheduling information of the activation system
message; or
[0149] that the second system message of the base station
previously does not include the scheduling information of the
activation system message changes to that the second system message
of the base station currently includes the scheduling information
of the activation system message.
[0150] Optionally, the activation system message includes an access
control message.
[0151] Based on the application scenario shown in FIG. 2, for an
NB-IoT system, the following uses an access control message as an
example to describe in detail the activation system information
transmission method (equivalent to an access control method in this
solution) in the present invention. Network elements deployed in
the solution are a base station and user equipment, and a main idea
of the solution is as follows:
[0152] 1. A bit (that is, the foregoing activation indication
information) is introduced in a master system message (Master
information Block, MIB) to indicate whether an NB-IoT access
control mechanism is enabled. In addition, the MIB further includes
a value tag (that is, the change indication tag) that is used to
indicate change indications of a plurality of SIBs that affect a
change of the value tag other than the MIB.
[0153] 2. Regardless of whether an NB-IoT access control function
is enabled, the base station adds scheduling information of an
SIB_AC to scheduling information of a SIB 1. A change of the
scheduling information affects a value of the value tag in the MIB,
that is, the base station always schedules SIB_AC system
message.
[0154] Specifically, when the access control function is
deactivated (AC=OFF), the SIB_AC system message is not sent, and a
radio resource corresponding to the SIB_AC system message may be
used for other data transmission. When the access control function
is activated (AC=ON), the SIB_AC system message is sent.
[0155] 3. For the UE, the UE determines whether to read scheduling
information of the SIB_AC system message and the SIB_AC system
message according to the value of the value tag in the MIB and the
bit that is in the MIB and that indicates whether access control is
activated.
[0156] Optionally, another method is: Similar to that in existing
LTE, broadcasting the SIB_AC or not makes the scheduling
information of the SIB 1 change. However, the value tag in the MIB
may not change. An eNB determines, according to a broadcast period,
an occupied resource, and the like of the SIB_AC, whether the value
tag needs to be updated. If none of the information changes, and
only the SIB_AC broadcasting starts and stops, the eNB may not
change the value tag.
[0157] In the solution of the present invention, system messages
are classified into two types according to a requirement for
timeliness in which a changed system message needs to be obtained:
One type is a conventional system message. After this type of
system message changes, UE does not need to immediately obtain a
changed system message, and can wait until a boundary of a change
period to obtain the changed system message. The other type is an
activation system message that needs to be obtained in time. After
this type of system message changes, the UE can obtain an updated
system message at any time, and no specific change period is
used.
[0158] Whether the conventional system message changes may be
indicated by a value tag. Values of value tags are compared to
determine whether the system message changes. Each value tag
represents a version of the conventional system message. When the
value tag changes, it means that some conventional system messages
change. The value tag is used to indicate a change status of a
system information block after a system message in which the value
tag is located. For example, if the value tag is located in a MIB,
the value tag is used to indicate changes of all conventional SIBs
other than the MIB. The SIBs include a SIB 1, a SIB 2, SIBs 3, 4,
and 5, and the like (a SIB that carries cell access control
information and scheduling information of another system
information block is represented as the SIB 1, a SIB for radio
resource configuration is represented as the SIB 2, a SIB newly
added to a cell for access control is represented as an SIB_AC, and
SIBs for cell selection and re-selection configuration are
represented as the SIBs 3, 4, and 5).
[0159] A system message that needs to be obtained in time is not
enumerated, and further includes another possible system message
that needs to be obtained in time, for example, an SIB_AC in which
an access control parameter is located. After the access control
parameter changes, the UE can obtain a changed access control
parameter in time without waiting until a boundary of a change
period to obtain the changed access control parameter.
[0160] In addition, for reducing power consumption of the terminal,
an indication is introduced in the MIB to indicate whether an
access control function is enabled, or whether another system
information block that needs to be obtained in time is enabled. An
access control information block is used as an example herein to
describe a method for sending and obtaining scheduling information
of the system information block that needs to be obtained in time.
A method for obtaining a scheduling mechanism of the another system
information block that needs to be obtained in time is the same as
the method for obtaining scheduling information of the access
control information block, and is not described.
[0161] With reference to the essence of the solution described
above, FIG. 6 is a schematic diagram of NB-IoT access control
according to the present invention. As shown in FIG. 6, a base
station first sends an access control enabling indication (which is
equivalent to activation indication information and is used in the
solution to indicate whether access control is activated) by using
a MIB.
[0162] The base station schedules access control, and sends
scheduling information of an SIB_AC (an access control information
block) by using scheduling information of a SIB 1.
[0163] On a UE side, when UE reads a system message, the UE first
reads a value tag (equivalent to the foregoing change indication
tag) and the access control enabling indication in the MIB. If the
access control enabling indication indicates that an access control
function is enabled, the UE detects whether a SIB 1 that includes
scheduling information of an access control parameter is locally
stored.
[0164] If the UE detects that the scheduling information of the
access control parameter is not locally stored, the UE reads the
SIB 1 sent by the base station to obtain the scheduling information
of the access control parameter SIB_AC, and then obtains an SIB_AC
in which the access control parameter is located and that is sent
at a resource location indicated in the scheduling information.
That is, when the scheduling information of the SIB_AC is not
locally stored, the UE needs to read the scheduling information
that is of the SIB_AC and that is in the SIB 1 broadcast by the
base station, and receive, on a corresponding resource, the SIB_AC
in which the access control parameter is located.
[0165] If the UE detects that the scheduling information of the
access control parameter is locally stored, the UE compares a
current value tag with a previously stored value tag. If values of
the value tags are the same, the UE uses previously stored
scheduling information of the access control parameter SIB_AC to
read an SIB_AC in which the access control parameter is located
without reading the SIB 1 in which the scheduling information of
the access control parameter is located and that is broadcast by
the base station. If values of the value tags are different, the UE
reads scheduling information that is of the access control
parameter SIB_AC and that is updated in the SIB 1, and then locally
stores or updates the scheduling information of the access control
parameter, and reads an access control parameter SIB_AC transmitted
at a resource location indicated in the scheduling information.
[0166] In the foregoing solution, when the UE reads the system
message, the UE first reads the value tag and the access control
enabling indication in the MIB. If the access control enabling
indication indicates that the access control function is disabled,
that is, the access control function is not activated, the UE may
read the scheduling information of the access control parameter in
the SIB 1 and store the scheduling information in the UE, or may
not directly read the scheduling information in the SIB 1.
[0167] In the foregoing solution, it can be ensured that the user
equipment needs to obtain the scheduling information of the access
control parameter only when the scheduling information related to
the access control parameter changes and the access control
function is enabled, so as to reduce power consumption of the UE.
Compared with the prior art in which the user equipment needs to
always serve the SIB 1 to obtain the scheduling information of the
access control parameter, in the solution, the user equipment does
not need to always read, when an enabling status of the access
control function changes, the SIB 1 to obtain the updated
scheduling parameter corresponding to the access control parameter,
so as to reduce the power consumption.
[0168] In addition, on the basis of the foregoing solution, another
implementation is provided.
[0169] When the UE reads a system message, the UE first reads a
value tag and an access control enabling indication in a MIB. If
the access control enabling indication indicates that an access
control function is enabled, the UE detects whether a SIB 1 that
includes scheduling information of an access control parameter is
stored. If the UE does not locally store the scheduling information
of the access control parameter, the UE reads the SIB 1 to obtain
the scheduling information of the access control parameter, and
then obtains a SIB_AC in which the access control parameter is
located and that is at a resource location indicated in the
scheduling information. If the UE stores the scheduling
information, the UE compares a current value tag with a previously
stored value tag. If values of the value tags are the same, the UE
uses previously stored scheduling information corresponding to the
access control parameter to read a SIB_AC in which the access
parameter is located without reading the SIB 1 in which the access
control parameter is located. If values of the value tags are
different, the UE reads scheduling information that is of the
access control parameter and that is updated in the SIB 1, and then
updates the scheduling information to the updated scheduling
information, and reads the SIB_AC in which the access control
parameter is located.
[0170] When the UE reads the system message, the UE first reads the
value tag and the access control enabling indication in the MIB. If
the access control enabling indication indicates that the access
control function is disabled, the UE stores the scheduling
information of the access control parameter in the SIB 1.
[0171] Different from the foregoing solution, if the SIB 1 changes
for another reason, the UE may re-read the SIB 1 according to the
value tag. However, if a new SIB 1 does not include the scheduling
information of the SIB_AC, it is considered that the original
scheduling information of the SIB_AC is still retained. That is,
when the new SIB 1 does not include the scheduling information of
the access control parameter, the locally stored scheduling
information is still used to read the access control parameter at a
corresponding location.
[0172] Optionally, there is another possible processing method.
When the UE detects that the scheduling information of the SIB_AC
is not locally stored, the UE reads the SIB 1 to obtain the
scheduling information of the SIB_AC later for storage. In this
case, regardless of whether the access control function is
activated, the UE may read the scheduling information that is of
the SIB_AC and that is in the SIB 1 for storage, so that in a
subsequent process, if it is determined that the scheduling
information does not change, the UE may directly use the locally
stored scheduling information without reading the SIB 1 again, so
as to save energy.
[0173] FIG. 7 is a schematic structural diagram of Embodiment 1 of
an activation system information transmission apparatus according
to the present invention. As shown in FIG. 7, the activation system
information transmission apparatus 10 includes:
[0174] a first receiving module 11, configured to receive a first
system message sent by a base station, where the first system
message includes activation indication information and a change
indication tag, the activation indication information is used to
indicate whether a function indicated in an activation system
message is activated, and the change indication tag is used to
indicate whether scheduling information of the activation system
message changes;
[0175] a processing module 12, configured to obtain first
scheduling information of the activation system message according
to the activation indication information and the change indication
tag; and
[0176] a second receiving module 13, configured to read the
activation system message according to the first scheduling
information.
[0177] The activation system information transmission apparatus
provided in this embodiment is configured to perform the technical
solution in the method embodiment shown in FIG. 3 or FIG. 4. An
implementation principle and a technical effect of the apparatus
are similar to those of the method embodiment shown in FIG. 3 or
FIG. 4. The apparatus receives the activation indication
information and the change indication tag that are added by the
base station to the broadcast first system message; and after
receiving the first system message, the apparatus selects,
according to the activation indication information and the change
indication tag, different manners to obtain the first scheduling
information of the activation system message, and then reads the
activation system message at a location corresponding to the first
scheduling information, so as to ensure that the transmission
apparatus needs to receive the scheduling information of the
activation system message only when the scheduling information
changes, and prevent the transmission apparatus from continuously
remaining in a detection and reception state, thereby effectively
reducing power consumption.
[0178] FIG. 8 is a schematic structural diagram of Embodiment 2 of
an activation system information transmission apparatus according
to the present invention. As shown in FIG. 8, on the basis of the
foregoing embodiment, the processing module 12 includes:
[0179] a detection submodule 121, configured to detect whether the
scheduling information of the activation system message is locally
stored;
[0180] a first determining submodule 122, configured to: if the
detection submodule detects that the scheduling information of the
activation system message is locally stored, determine, according
to the activation indication information, whether the function
indicated in the activation system message is activated;
[0181] a second determining submodule 123, configured to: if the
first determining submodule determines that the function indicated
in the activation system message is activated, determine, according
to the change indication tag, whether the scheduling information of
the activation system message changes; and
[0182] a processing submodule 124, configured to: if the second
determining submodule determines that the scheduling information of
the activation system message does not change, use the locally
stored scheduling information of the activation system message as
the first scheduling information.
[0183] Optionally, if the detection submodule 121 detects that the
scheduling information of the activation system message is not
locally stored, the second receiving module 13 is further
configured to receive a second system message sent by the base
station, where the second system message includes the first
scheduling information of the activation system message and
scheduling information of a conventional system message.
[0184] Optionally, if the detection submodule 121 detects that the
scheduling information of the activation system message is not
locally stored, and the first determining submodule 122 determines
that the function indicated in the activation system message is
activated, the second receiving module 13 is further configured to
receive a second system message sent by the base station, where the
second system message includes the first scheduling information of
the activation system message and scheduling information of a
conventional system message.
[0185] Optionally, if the second determining submodule 123
determines that the scheduling information of the activation system
message changes, the second receiving module 13 is further
configured to receive a second system message sent by the base
station, where the second system message includes the first
scheduling information of the activation system message and
scheduling information of a conventional system message.
[0186] FIG. 9 is a schematic structural diagram of Embodiment 3 of
an activation system information transmission apparatus according
to the present invention. As shown in FIG. 9, on the basis of any
one of the foregoing embodiments, the activation system information
transmission apparatus 10 further includes:
[0187] a storage module 14, configured to update the locally stored
scheduling information of the activation system message to the
first scheduling information.
[0188] Optionally, if the change indication tag is a value tag, the
second determining submodule 123 is specifically configured to: if
the UE detects that the value tag changes, determine that the
scheduling information of the activation system message changes; or
if the UE detects that the value tag does not change, determine
that the scheduling information of the activation system
information does not change.
[0189] Further, the activation system message read by the second
receiving module 13 includes an access control message.
[0190] The activation system information transmission apparatus
provided in the embodiment shown in FIG. 8 or FIG. 9 is configured
to perform the technical solutions of the UEs in the method
embodiments shown in FIG. 2 to FIG. 6. An implementation principle
and a technical effect of the apparatus are similar to those of the
UEs, and details are not described herein again.
[0191] FIG. 10 is a schematic structural diagram of Embodiment 4 of
an activation system information transmission apparatus according
to the present invention. As shown in FIG. 10, the activation
system information transmission apparatus 20 includes:
[0192] a first processing module 21, configured to generate a first
system message, where the first system message includes activation
indication information and a change indication tag, the activation
indication information is used to indicate whether a function
indicated in an activation system message is activated, and the
change indication tag is used to indicate whether scheduling
information of the activation system message changes; and
[0193] a first sending module 22, configured to broadcast the first
system message, so that user equipment UE obtains first scheduling
information of the activation system message according to the
activation indication information and the change indication tag,
and reads the activation system message according to the first
scheduling information.
[0194] The activation system information transmission apparatus
provided in this embodiment is configured to perform the technical
solutions of the base stations in the method embodiments shown in
FIG. 2 to FIG. 6. An implementation principle and a technical
effect of the apparatus are similar to those of the base stations,
and details are not described herein again.
[0195] FIG. 11 is a schematic structural diagram of Embodiment 5 of
an activation system information transmission apparatus according
to the present invention. As shown in FIG. 11, the activation
system information transmission apparatus 20 further includes:
[0196] a second processing module 23, configured to generate a
second system message, where the second system message includes the
scheduling information corresponding to the activation system
message and scheduling information of a conventional system
message; and
[0197] a second sending module 24, configured to broadcast the
second system message and the activation system message if the
activation indication information indicates that the function
indicated in the activation system message is activated, where
[0198] the second sending module is further configured to broadcast
the second system message if the activation indication information
indicates that the function indicated in the activation system
message is not activated.
[0199] Optionally, if the change indication tag is a value tag, the
first processing module 21 is specifically configured to:
[0200] change the value tag when it is determined that the sent
scheduling information of the activation system message changes;
or
[0201] change the value tag when it is determined that the access
control apparatus changes from a state in which the access control
apparatus does not send the scheduling information of the
activation system message to a state in which the access control
apparatus sends the scheduling information of the activation system
information, or the access control apparatus changes from a state
in which the access control apparatus sends the scheduling
information of the activation system message to a state in which
the access control apparatus does not send the scheduling
information of the activation system information; or
[0202] skip changing the value tag when it is determined that the
access control apparatus changes from a state in which the access
control apparatus does not send the scheduling information of the
activation system message to a state in which the access control
apparatus sends the scheduling information of the activation system
information, or the access control apparatus changes from a state
in which the access control apparatus sends the scheduling
information of the activation system message to a state in which
the access control apparatus does not send the scheduling
information of the activation system information.
[0203] The activation system information transmission apparatus
provided in this embodiment is configured to perform the technical
solutions of the base stations in the method embodiments shown in
FIG. 2 to FIG. 6. An implementation principle and a technical
effect of the apparatus are similar to those of the base stations,
and details are not described herein again.
[0204] FIG. 12 is a schematic structural diagram of Embodiment 1 of
user equipment according to the present invention. As shown in FIG.
12, the user equipment 30 includes a memory 31 that stores a
program instruction, a processor 32 configured to control execution
of the program instruction, and a receiver 33.
[0205] The receiver 33 is configured to receive a first system
message sent by a base station, where the first system message
includes activation indication information and a change indication
tag, the activation indication information is used to indicate
whether a function indicated in an activation system message is
activated, and the change indication tag is used to indicate
whether scheduling information of the activation system message
changes.
[0206] The processor 32 is configured to obtain first scheduling
information of the activation system message according to the
activation indication information and the change indication
tag.
[0207] The receiver 33 is further configured to read the activation
system message according to the first scheduling information.
[0208] Specifically, the processor 32 of the user equipment 30 is
specifically configured to:
[0209] detect whether the scheduling information of the activation
system message is locally stored;
[0210] if the scheduling information of the activation system
message is locally stored, determine, according to the activation
indication information, whether the function indicated in the
activation system message is activated;
[0211] if the function indicated in the activation system message
is activated, determine, according to the change indication tag,
whether the scheduling information of the activation system message
changes; and
[0212] if the scheduling information of the activation system
message does not change, use the locally stored scheduling
information of the activation system message as the first
scheduling information.
[0213] Optionally, if the scheduling information of the activation
system message is not locally stored, the receiver 33 is further
configured to receive a second system message sent by the base
station, where the second system message includes the first
scheduling information of the activation system message and
scheduling information of a conventional system message.
[0214] Optionally, if the scheduling information of the activation
system message is not locally stored, and the function indicated in
the activation system message is activated, the receiver 33 is
further configured to receive a second system message sent by the
base station, where the second system message includes the first
scheduling information of the activation system message and
scheduling information of a conventional system message.
[0215] Optionally, if the scheduling information of the activation
system message changes, the receiver 33 is further configured to
receive a second system message sent by the base station, where the
second system message includes the first scheduling information of
the activation system message and scheduling information of a
conventional system message.
[0216] Further, the processor 32 is configured to update the
scheduling information that is of the activation system message and
that is stored in the memory 31 to the first scheduling
information.
[0217] Optionally, if the change indication tag is a value tag, the
processor 32 is further configured to:
[0218] if it is detected that the value tag changes, determine that
the scheduling information of the activation system message
changes; or if it is detected that the value tag does not change,
determine that the scheduling information of the activation system
information does not change.
[0219] Optionally, the activation system message includes an access
control message.
[0220] The user equipment provided in this embodiment is configured
to perform the technical solutions of the UEs in the method
embodiments shown in FIG. 2 to FIG. 6. An implementation principle
and a technical effect of the user equipment are similar to those
of the UEs, and details are not described herein again.
[0221] FIG. 13 is a schematic structural diagram of Embodiment 2 of
user equipment according to the present invention. As shown in FIG.
13, the user equipment 600 includes at least one processor 601, at
least one network interface 604 or another user interface 603, a
memory 605, at least one communications bus 602, and a transceiver
606. The communications bus 602 is configured to implement
connection and communication between these components. Optionally,
the terminal device 600 includes the user interface 603. The user
interface 603 includes a display (such as a touchscreen, an LCD, a
CRT, a holographic imaging device, or a projector), a keyboard, or
a click device (such as a mouse, a trackball, a touchpad, or a
touchscreen).
[0222] The memory 605 may include a read-only memory and a random
access memory, and provide an instruction and data for the
processor 601. A part of the memory 605 may be specifically
implemented as: a read-only memory (ROM), a RAM, a flash memory, a
hard disk, a solid state disk, a magnetic tape, a floppy disk, an
optical disc, and any combination thereof.
[0223] In this solution, the transceiver 606 may specifically
include a transmitter circuit and a receiver circuit, and a carrier
thereof, so as to allow data transmission and reception between the
user equipment 600 and a base station or a wireless network router.
The transmitter circuit and the receiver circuit may be coupled to
an antenna for implementation.
[0224] In some implementations, the memory 605 stores the following
elements: an executable module or a data structure, or a subset
thereof, or an extended set thereof: an operating system 6051,
including various system programs, such as a framework layer, a
kernel library layer, and a driver layer, and configured to
implement various basic services and process a hardware-based task;
and
[0225] an application program module 6052, including various
application programs, such as a desktop (launcher), a media player,
and a browser that are shown in FIG. 1, and configured to implement
various application services.
[0226] In this embodiment of the present invention, the processor
601 is configured to control execution of the solution of the UE in
the method embodiment by invoking a program or an instruction
stored in the memory 605. Specifically, the processor 601 is
configured to control the transceiver 606 to receive a first system
message sent by the base station, where the first system message
includes activation indication information and a change indication
tag, the activation indication information is used to indicate
whether a function indicated in an activation system message is
activated, and the change indication tag is used to indicate
whether scheduling information of the activation system message
changes.
[0227] The processor 601 is further configured to control execution
of the instruction in the memory 605 to: obtain first scheduling
information of the activation system message according to the
activation indication information and the change indication tag,
and read the activation system message according to the first
scheduling information.
[0228] FIG. 14 is a schematic structural diagram of Embodiment 1 of
a base station according to the present invention. As shown in FIG.
14, the base station 40 includes a memory 41 that stores a program
instruction, a processor 42 configured to control execution of the
program instruction, and a transmitter 43.
[0229] The processor 42 is configured to generate a first system
message, where the first system message includes activation
indication information and a change indication tag, the activation
indication information is used to indicate whether a function
indicated in an activation system message is activated, and the
change indication tag is used to indicate whether scheduling
information of the activation system message changes.
[0230] The transmitter 43 is configured to broadcast the first
system message, so that user equipment UE obtains first scheduling
information of the activation system message according to the
activation indication information and the change indication tag,
and reads the activation system message according to the first
scheduling information.
[0231] Optionally, the processor 42 is further configured to
generate a second system message, where the second system message
includes the scheduling information corresponding to the activation
system message and scheduling information of a conventional system
message.
[0232] The transmitter 43 is further configured to broadcast the
second system message and the activation system message if the
activation indication information indicates that the function
indicated in the activation system message is activated; or
[0233] the transmitter 43 is further configured to broadcast the
second system message if the activation indication information
indicates that the function indicated in the activation system
message is not activated.
[0234] Optionally, the change indication tag is a value tag.
[0235] The processor 42 is specifically configured to:
[0236] change the value tag when it is determined that the sent
scheduling information of the activation system message changes;
or
[0237] change the value tag when it is determined that the base
station changes from a state in which the base station does not
send the scheduling information of the activation system message to
a state in which the base station sends the scheduling information
of the activation system information, or the base station changes
from a state in which the base station sends the scheduling
information of the activation system message to a state in which
the base station does not send the scheduling information of the
activation system information; or
[0238] skip changing the value tag when it is determined that the
base station changes from a state in which the base station does
not send the scheduling information of the activation system
message to a state in which the base station sends the scheduling
information of the activation system information, or the base
station changes from a state in which the base station sends the
scheduling information of the activation system message to a state
in which the base station does not send the scheduling information
of the activation system information.
[0239] The activation system message includes an access control
message.
[0240] The base station provided in this embodiment is configured
to perform the technical solutions of the base stations in the
method embodiments shown in FIG. 2 to FIG. 6. An implementation
principle and a technical effect of the base station are similar to
those of the base stations, and details are not described herein
again.
[0241] In the foregoing embodiment of the user equipment or the
base station, it should be understood that the processor may be a
central processing unit (CPU), or may be another general-purpose
processor, a digital signal processor (DSP), an
application-specific integrated circuit (ASIC ort), or the like.
The general-purpose processor may be a microprocessor, or the
processor may be any conventional processor or the like. The steps
in the method disclosed with reference to the embodiments of the
present invention may be directly performed by a hardware
processor, or may be performed by using a combination of hardware
in a processor and a software module.
[0242] Persons of ordinary skill in the art may understand that all
or some of the steps of the method embodiments may be implemented
by a program instructing relevant hardware. The program may be
stored in a computer-readable storage medium. When the program is
executed, the steps of the methods in the embodiments are
performed. The storage medium includes: a read-only memory (ROM), a
RAM, a flash memory, a hard disk, a solid state disk, a magnetic
tape, a floppy disk, an optical disc, and any combination
thereof.
[0243] Finally, it should be noted that the foregoing embodiments
are merely intended for describing the technical solutions of the
present invention, but not for limiting the present invention.
Although the present invention is described in detail with
reference to the foregoing embodiments, persons of ordinary skill
in the art should understand that they may still make modifications
to the technical solutions described in the foregoing embodiments
or make equivalent replacements to some or all technical features
thereof, without departing from the scope of the technical
solutions of the embodiments of the present invention.
* * * * *